iniquity vs low-mindedness

iniquity

noun
  • An act of great injustice or unfairness; a sinful or wicked act; an unconscionable deed. 

  • Deviation from what is right; gross injustice, sin, wickedness. 

low-mindedness

noun
  • The characteristic of being low-minded; vulgarity or lack of honor. 

How often have the words iniquity and low-mindedness occurred in a corpus of books? (source: Google Ngram Viewer )